<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title>下划线</title>
		<style type="text/css">
			p{
				text-decoration:underline;
			}
		</style>
	</head>
	<body>
		<p>111111111</p>
		
		
		<div><ins>22222222222</ins></div>
		<!--ins标签-->
	</body>
</html>
